<h3>News Preview</h3>
<?php if ($news->is_loaded()) { ?>        
<iframe 
  frameborder="0" 
  id="page_preview" 
  scrolling="auto" 
  src="<?php echo get_installed_path().'/news/preview/'.$news->get('index_name')?>"
  width="99%" 
  height="500" style='border:1px solid #000'></iframe>
<?php } else { ?>
    <p>Preview not available until news story is saved the first time</p>
<?php } ?>